“Some school age children have normal auditory thresholds yet appear to have a
hearing impairment. They are described by their parents and teachers as children who are uncertain about what they hear, have difficulty listening in the presence of background noise, struggle to follow oral instructions and find understanding rapid or degraded speech difficult. In a significant proportion of these children, the listening problems result from an auditory processing deficit: the defective processing of auditory information in spite of normal thresholds.”
Jerger and Musiek (2000)